129723916563 has 48 divisors (see below), whose sum is σ = 196153963200. Its totient is φ = 82530627840.

The previous prime is 129723916559. The next prime is 129723916573. The reversal of 129723916563 is 365619327921.

129723916563 is a `hidden beast` number, since 1 + 2 + 9 + 72 + 3 + 9 + 1 + 6 + 563 = 666.

It is not a de Polignac number, because 129723916563 - 2² = 129723916559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129723916573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7283473 + ... + 7301261.

It is an arithmetic number, because the mean of its divisors is an integer number (4086540900).

Almost surely, 2^129723916563 is an apocalyptic number.

129723916563 is a deficient number, since it is larger than the sum of its proper divisors (66430046637).

129723916563 is a wasteful number, since it uses less digits than its factorization.

129723916563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18252 (or 18249 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The spelling of 129723916563 in words is "one hundred twenty-nine billion, seven hundred twenty-three million, nine hundred sixteen thousand, five hundred sixty-three".